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MESSAGE FROM THE PRESIDENT 


Dear Members and Friends; 

Two students were applying for a summer job at a well-known raptor center, but only one position was 
available. The director of the establishment perused their resumes, which were for the center's purposes 
much the same. In other words, the candidates were equally qualified for the position. Which one to choose? 
Then the director noticed that while both students were members of the Raptor Research Foundation (RRF), 
one had actually got involved with the organization. He had served on the local organizing committee for 
an RRF conference held in his region a couple of years ago. He got the job. 

Here is my point. To me, it is not enough just to be a member of an organization, i.e., pay your annual dues, 
receive the journals and newsletters, and maybe attend the annual conference occasionally. To really belong 
to an organization, one must get involved! 

Now I know what some of you are thinking. "I don't have a Ph.D." or "I'm not a big-shot professor or 
scientist!" or "I don't have any profile-- what do I have to offer?!" The fact is that you have plenty to offer: 
time and energy. 

Based on my experience, it is true that if one wants to get elected to the board or become an officer or, God 
forbid, the president of RRF, one must have some profile. To put it in other words, you have to earn your 
stripes. After all, you are trying to convince fellow members to vote for you, to have faith in you. I look for 
two things when 1 am reading over the bio-sketches of RRF candidates looking for my vote. First, to what 
extent have they been involved in the organization and second, what do they hope to accomplish during their 
tenure? Having said that, there seems to be a general shortage of people running for board and officer 
positions in any given election. Put your hat in the ring, and do not give up! 

I do recognize that RRF is no longer big on committees; we used to have dozens, but most were ineffective 
and non-productive. The Conferences Committee has been mainly run by Mike Kochert and myself, if only 
because we have been attending RRF conferences for over two decades. 

We will, however, be looking to bring in some new blood in this capacity. 

For its purposes, the Resolutions Committee is not a terribly busy one and 
is essentially a one-person show in the form of Dave Garcelon. The various 
Awards Committees have generally been manned by members who are 
well-established in their careers, who have shown good judgement in other 
matters, and who are perhaps colleagues of the person the award is named 
after. On the other hand, both the Koplin and Andersen Award Committees 
are always looking for help. The Publications Committee consists of the 
various current editors of our literature, i.e., Marc Bechard, Lenny Young, 
and Daniel Varland. Pat Hall and Massimo Pandolfi comprise our 
Nomination Committee, and any other members joining them should be 
well-connected in the raptor world. Presently, Jim Bednarz chairs our 
Conservation Committee composed of several experienced veterans in both 



WINGSPAN 


raptor conservation, as well as serving in other ways in RRF. This is an extremely busy committee, and 
members should be willing to serve in more than name only. A blend of sage raptor biologists well-versed 
in science and some neophytes who have plenty of time and energy on their hands should make this a highly 
productive and effective committee. Conservation should and must become a priority for RRF, and I refer 
you to an article on this subject by David Andersen and Jim Bednarz elsewhere in this issue. 

Not meaning to belittle their accomplishments to date, there are three RRF committees that could possibly 
use some additional energy and input: the Membership Committee headed by Dick Clark, the Education and 
Rehabilitation Committee headed by Nancy Read and Betsy Hancock, and the Public Relations Committee 
consisting of Walter Crawford and myself. RRF definitely needs an active Development Committee to get 
an endowment fund off the ground. If you are interested, communicate with me or president-elect Mike 
Kochert. 

So, want to do something for RRF besides join a committee, but don't have any ideas? Here are some. First, 
do attend our annual conferences and network by introducing yourself to officers and directors of the 
organization. Indicate your willingness to help in some way. If there is an RRF conference in your region, 
offer your assistance, whether it is stuffing envelopes, being a gofer, or sitting at a registration desk. Help 
us stimulate more people to join RRF by distributing our brochures in your neck of the woods or at other 
conferences. We especially need members in eastern Europe, Africa, and Latin America. Organize a 
fund-raiser, e.g., bake sale, raffle, etc., for RRF or request some of our pins, decals, and/or literature from 
our treasurer and sell them to raise funds for RRF. Our raffle being organized by Ed Henckel is still badly 
in need of donated items, e.g., raptor books, prints, clothing, etc. If you are a financial wizard or have 
connections with the wealthy, maybe you can give us some advice as to how to expand our coffers to build 

(continued on page - 16 ) 


THE RAPTOR RESEARCH FOUNDATION, INC. 
(FOUNDED 1966) 


OFFICERS 


PRESIDENT: David M. Bird SECRETARY: Patricia A; Hall 

PRESIDENT-ELECT: Michael N. Kochert TREASURER: Jim Fitzpatrick 

VICE-PRESIDENT: David E. Andersen 

BOARD OF DIRECTORS 


INTERNATIONAL DIRECTOR #1: Massimo Pandolfi 
INTERNATIONAL DIRECTOR #2: Michael McGrady 
CANADIAN DIRECTOR: Gordon S. Court 
MOUNTAIN & PACIFIC DIRECTOR: Karen Steenhof 
CENTRAL DIRECTOR: Robert N. Rosenfield 
EASTERN DIRECTOR: Brian A. Millsap 


DIRECTOR AT LARGE #1: Patricia L. Kennedy 
DIRECTOR AT LARGE #2: John A. Smallwood 
DIRECTOR AT LARGE #3: James C. Bednarz 
DIRECTOR AT LARGE #4: Cesar Marquez Reyes 
DIRECTOR AT LARGE #5: Petra Bohall Wood 
DIRECTOR AT LARGE #6: Lloyd F. Kiff 


Wingspan is distributed twice a year to all RRF members. It is also available to non-members for a subscription rate of 
$ 1 0 per year. The Journal of Raptor Research (ISSN 0892-101 6) is published quarterly and available to individuals for 
$30 per year and to libraries and institutions for $50 per year from: The Raptor Research Foundation, Inc., 12805 St. 
Croix Trail, Hastings, MN 55033 USA. Add $3 for destinations outside of the continental United States. 

Persons interested in predatory birds are invited to join The Raptor Research Foundation, Inc. Send requests for 
information concerning membership, subscriptions, special publications, or change of address to: Jim Fitzpatrick, 
Treasurer, 12805 St. Croix Trail, Hastings, MN 55033 USA. 


SEPTEMBER 1997 

1997 RRF MEETING FLIES SOUTH THIS FALL! 

by Wendy Denton & Mary Margaret Spradlin 


The Raptor Research Foundation's 1997 annual meeting will be held from October 30 to November 1 in 
Savannah, Georgia. The meeting will take place at the beautiful Savannah Mariott Riverfront, with easy 
access to Savannah's picturesque historic district, restaurants, and beaches. The conference will consist of 
general paper sessions on various aspects of raptor ecology and biology, a special symposium on "The Status 
and Biology of Kites" convened by Ken Meyer and Brian Millsap, and a poster session. Field trips, exhibits, 
films, and videos will round out a stimulating conference. A call for papers has been mailed ro RRF 
members. More are available upon request. 

Field trips and social events will offer participants a memorable experience. Field trips are available on 
Friday, October 31 for full- and halfday outings. Full-day trip options include tours of the Okeefenokee 
National Wildlife Refuge and the Savannah River Ecology Lab, a birding tour of nearby coastal areas, and 
a trip to Sapelo Island. Flalf-day excursions include birdwatching on the coast; squirrel hunting with a local 
falconer; a trip to the new Center for Wildlife Education and the Lamar Q. Ball, Jr. Raptor Center at Georgia 
Southern University; a tour of Savannah's historic and Victorian districts; and a tour of historic Fort Pulaski. 
Social events include a cocktail-poster reception, a Halloween dinner social in Georgia's oldest fort, and an 
informal awards banquet at the Mariott. The banquet will also feature a raffle for books and fine pieces of 
art. Conference attendees will enjoy the amenities of a fabulous conference facility and rooms in a first class 
hotel. Room rates begin at $85 for single or double rooms. Inexpensive lodging is available to students near 
the conference location. 

Registration for members is $1 10 before September 30, and $130 after that time; non-members are welcome 
at $ 1 20/$ 1 40 and students at $65/$85. ATTENTION STUDENTS! YOUR RATE HAS BEEN REDUCED 
FROM THAT PRINTED IN THE CALL FOR PAPERS! THIS IS THE NEW REGISTRATION FEE! IF YOU 
HA. VE ALREADY MAILED YOUR REGISTRA TION, YOU WILL BE REFUNDED THIS $30 REDUCTION 
All attendees will receive a commemorative conference print of a Swallow-tailed Kite, as part of their 
registration packet. Field trips and social events are additional. 

Allow us to assure you that Southern hospitality WILL be in abundance! For more information about the 
meeting, please contact Michelle Pittman or Fran Aultman, Georgia Southern University, P.O, Box 
8124, Statesboro, G A 30460-8124, phone: 912-681-5555, fax: 912-68 1-0360, e-mail: meeden@ 
gsvms2.cc.gasou.edu or franic@gsaix2.cc.gasou.edu. 

EASTERN REGION NEWS 
by Brian A. Millsap, Eastern Director 

RRF work in at least my part of the Eastern Region has focused on preparations for the 1997 annual meeting 
in Savannah, Georgia. The local committee and Georgia Southern University have been working hard to 
ensure that this meeting will be a memorable one! I’ve toured the facilities and know much of what is in store 
for us, and 1 can assure you that you don't want to miss it. As for the rest of the Eastern Region, I just want 
to remind you that I am your voice on the board, and I want to serve your interests. Please feel free to contact 
me anytime that I can be of service. Lean be reached via e-mail at millsab@mail. state. fl. us, or by phone 
during the day at (850-488-383 1 ). 1 look forward to seeing you in Savannah! 


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FALCONRY POSITION STATEMENT 

OF 


THE RAPTOR RESEARCH FOUNDATION, INC. 


INTRODUCTION 

Birds of prey have received considerable conservation attention in recent years due to marked declines in 
some populations, notably of those species vulnerable to environmental pollutants. As a result of these 
declines, and because reliable data on population status were often unavailable, protection of raptor species 
became a conservation priority, including strict regulation of the sport of falconry. In 1977, the Conservation 
Committee of the Wilson Ornithological Society (WOS) reported on falconry in North America (Braun et 
al. 1977), concluding that falconry is a legitimate art but that monitoring of raptor populations was needed. 
Recommendations were made that falconry regulations be adopted by all states, that a practical marking 
system be developed for permanent identification of individual raptors, that properly marked falconry birds 
be allowed to be transported freely between states, and that captive bred raptors of any species be allowed 
for falconry. At the time of the WOS committee report, newly promulgated federal regulations controlling 
the practice of falconry were being implemented in the United States which have served as the basis, with 
minor changes, for regulating the sport in 42 states. Similar rules have been promulgated by several 
provinces in Canada. 

Since 1977, substantial data have become available on the status of most raptor species suitable for falconry, 
and depressed raptor populations have generally recovered in North America and Europe. Most of the 
recommendations of the WOS Conservation Committee have been achieved in the United States and Canada, 
and the contributions of falconers to raptor management and conservation education have been widely 
recognized. Yet regulation of falconry still causes controversy in some countries. 

The purpose of the Falconry Position Statement by the Raptor Research Foundation, Inc., is to provide 
current and additional expert opinion based on available biological data on issues relating to the regulation 
and practice of falconry. This statement neither affirms nor disaffirms the philosophical question of the 
legitimacy of the sport of falconry. . 

DEFINITION OF ISSUES 

Harvest from Wild Populations, -The removal of young birds from wild populations reduces productivity 
(directly, and perhaps indirectly through disturbance during the nesting season). However, raptors are a 
renewable resource, and thus the game management principle of "sustainable yield" may be appropriately 
applied to harvest of individuals from healthy populations. 

Captive Propagation. —Captive propagation of raptors has increased dramatically in recent years, and the 
release of captive-bred progeny has been valuable for reestablishing some endangered species. Captive 
breeding provides birds for falconry, but may also be used to conceal illegally acquired birds unless 
parentage can be proven. 

Hybridization and Introductions. -The production of hybrids, especially among large falcons, has raised 
questions concerning the release of such birds to the wild. Genetic theory predicts that, at normal population 
levels, hybrids between sympatric or parapatric species would be eliminated by natural selection. Similarly, 
non-native species from within the same super-continent (Americas, Eurasia) are unlikely to establish 
themselves in the wild as introduced aliens. However, traits from hybrids between allopatric species might 
establish in native stocks, and species from other super-continents might become accidentally introduced if 
used in large numbers for falconry. 


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Identification of Individual Birds and Parentage. -To effectively enforce falconry regulations, individual 
birds must be reliably identified. Leg bands which cannot be refastened after removal would be a convenient 
method, but bands currently used are not entirely reliable. Alternatives include biochemical parentage tests, 
which should soon be available for raptors, and foot scute patterns which are expected to provide unique 
"fingerprints" for individual identification. 

Regulation and Enforcement of Falconry. -Controls are desirable; however, the intensity of regulations and 
their enforcement should be consonant with the risk to raptor populations. 

POSITION 

The position of the Raptor Research Foundation, Inc., with regard to the above stated issues relating to 
falconry is: 

1 . North American raptors used in falconry have stable or increasing populations throughout most 
or all of their range. This is also generally true of European countries where falconry is practiced. 

2. Evidence indicates that large and stable or increasing raptor populations can sustain an annual 
harvest of at least 1 0% of nestlings. 

3. Any harvest of raptors from small and unstable or declining populations should be evaluated, in 
each instance, on a biological (e.g., population and productivity data) basis. 

4. The annual harvest of wild raptors by falconers in the United States is well below 5% for any 
species and below 1% for most species. Percentages are not adjusted for return to wild stocks of 
released and escaped birds. 

5. Final development of biochemical parentage tests and the use of foot scute patterns for individual 
identification should be encouraged as tools for regulation and enforcement. 

6. Escape of sympatric and parapatric species or their hybrids is unlikely to pose any significant 
threat to wild populations. However, we recommend that hybrids between allopatric species should 
not be bred for falconry, and that other hybrids or species at risk of accidental introduction between 
super-continents should be imprinted on humans before being used in falconry. 

7., Licensing individual falconers on merit is effective for regulating falconry, especially when 
combined with individual markers for raptors of special management concern (e.g., endangered 
species). There is little conservation justification for the administrative costs of marking common 
raptors individually, and future consideration should be given to modification of this practice. 

8. Many resources now being directed toward the control of falconry in the United States and 
elsewhere could be redirected to raptor population monitoring, habitat conservation, education and 
preventing the killing of wild raptors. 

9. Government agencies should be more responsive to the changing status of species, both by 
imposing protection when necessary and by removing restrictions on use when biological data 
indicate such is warranted. 

10. International standards for the practice and regulation of falconry are encouraged. 
ACKNOWLEDGMENTS 

The Raptor Research Foundation is grateful to Jim Mosher, Jim Brett, Robert Kenward, and Ian Newton, 
who formed the ad-hoc committee which drafted and revised this position statement on behalf of RRF. The 
Raptor Research Foundation also thanks Dean Amadon, Clait Braun, Allen Brohm, Tom Cade, S. Kent 
Carnie, Christian de Coune, Gary E. Duke, Mark Fuller, Frederick and Frances Hamerstrom, Jeffrey Lincer, 
Jimmie R. Parrish, James Ruos, and James Weaver for their comments and suggestions on earlier drafts of 
the statement. 

{Editor's note; Expanded abstracts, including literature citations, relevant to RRF's Falconry Position 
Statement will be published in The Journal of Raptor Research , Volume 3 1 , Issue No. 3.) 

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RRF AND RAPTOR CONSERVATION 

by David E. Andersen, Vice-President & 

James C. Bednarz, Chair, Conservation Committee 

Without question, members of the Raptor Research Foundation, Inc. (RRF), have had a significant and 
positive influence on the conservation of raptors. From furthering scientific understanding of raptors, to 
conscientiously using raptors in the ancient art of falconry, members of RRF have had wide ranging and 
important impacts on raptors and the attitudes of others about raptors. Many RRF members have devoted 
their professional careers to the conservation of raptors, and we suspect that most RRF members devote a 
significant portion of their energy and passion to raptors. Individual members of RRF exhibit tireless efforts 
toward furthering raptor conservation in both their profession and avocation, and are recognized for their 
efforts both within and outside the organization. 

Recently, however, we have begun to wonder whether the same can be said about RRF as an organization. 
A number of very significant conservation issues involving raptors have been prominent in the recent past. 
The controversies regarding Northern Spotted Owls, Mexican Spotted Owls, Apache Northern Goshawks, 
Queen Charlotte Northern Goshawks, and Swainson's Hawks have all proceeded with little visible presence 
of RRF, although individual RRF members have been and are significantly involved in each. While these 
issues are discussed at some length at annual RRF meetings, it seems to us that RRF is largely absent in 
contributing to discussions at the level of the general public and public policy; Case in point: the American 
Ornithologists' Union (AOU) and The Wildlife Society (TWS) recently completed a technical review of 
published management guidelines for southwestern forests and Northern Goshawks in the desert southwest. 
RRF members participated in that review, but as representatives of AOU or TWS. RRF as an organization 
was absent from that review. Why? The answer is that RRF was not invited to participate in the review. 
Why wasn't RRF invited to participate in such a review? And, had RRF been invited to participate, would 
RRF been positioned to provide a professional technical review in a timely manner? 

So, we pose two additional questions. One, has RRF been absent as an organization from important and 
visible raptor conservation issues? To us, the answer to that question is YES. Second, given this absence, 
should RRF as an organization do something to correct that deficiency? That is a matter of policy for RRF 
to address as an organization. In recent years, many members of the RRF Board have advocated that the 
organization should become increasingly involved in conservation policy decisions. Also, RRF currently 
has a Conservation Committee. Thus, it would seem that the membership does want to (and in our opinion 
should) play a significant role in raptor conservation issues. As an organization, it may be appropriate to 
coordinate RRF's participation with other scientific societies (likely through the Ornithological Council) in 
technical review of raptor conservation issues in the future. However, that means that we must be willing 
and prepared to participate in such projects in a timely and professional manner, which necessitates 
significant contributions of time and expertise by RRF members. To date, those kinds of contributions have 
been hard to come by when it comes to addressing raptor conservation issues. 

That is not to imply that the Conservation Committee has been doing nothing. Activities in the past year 
include: 

® An active committee reviewing the proposal to delist Falco peregrimts cmatum (Brian Millsap 
chairs that committee). 

® Submission of a letter to the U.S. Fish and Wildlife Service concerning the elimination of 
"Categoiy 2" species as candidates for listing as endangered or threatened (RRF opposed it, see the 
letter below). 

0 Submission of suggestions and substantial revisions to the soon to be published "Guidelines for the 
Use of Wild Birds in Research" produced by the Ornithological Council (RRF's input emphasized 

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the humane treatment of both raptors and the lure animals used in trapping raptors, and that 
traditional trapping methods for raptors could he accomplished in a humane manner). We suggest 
that all raptor field workers follow these guidelines when conducting research. 

• Formation of an ad hoc committee to review management prescriptions for Ferruginous Hawks on 
Bureau of Land Management lands in Utah (report is due soon). 

• Formation of an ad hoc committee to make recommendations concerning the development of 
Habitat Conservation Plans (HCP) for raptors. This is a major undertaking, and this committee may 
need some assistance. 

Unfortunately, the RRF Conservation Committee was unable to act on a number of other issues and crises 
that arose during the past year because of the lack of time and able volunteers available to do the necessary 
research that would permit RRF to provide formal written input based on solid science. 

In summary, we find RRF's current participation in raptor conservation issues inadequate. Thus, we 
challenge RRF to be neither satisfied with past contributions nor willing to be satisfied with the contributions 
that most individual members are currently making. Rather, we believe that RRF should be the preeminent 
organization regarding raptor conservation issues in the world. That will not happen unless RRF members 
collectively decide to make that happen by their actions. Simply proclaiming that RRF should become 
involved in conservation issues and going about business as usual will not change the status quo. Maybe 
inclusion of additional people into RRF’s Conservation Committee (people with the expertise and willingness 
to commit time and energy) will move a conservation agenda forward. We are convinced that innovative 
progress in conservation can only be implemented by painstaking effort and significant contributions of time. 
We hope that a group as eminently qualified and devoted as RRF could muster the commitment necessary 
to increase our effectiveness as an organization committed to the conservation of raptors. 

RRF COMMENTS ON ’’CATEGORY 2 & 3” DESIGNATIONS 

1 6 October 1996 

Mr. E. LaVerne Smith 
Chief 

Division of Endangered Species 
U.S. Fish and Wildlife Service 
1 849 C Street N.W. 

Mailstop 452 ARLSQ 
Washington, D.C. 20240 

Dear Mr. Smith: 

This letter is in response to the changes in the process by which the Fish and Wildlife Service identifies 
candidates for addition to the lists of endangered and threatened wildlife and plant taxa as proposed in the 
Federal Register Vol. 61(40):7596-7599 and Vol. 61 (1 8.1 ):48875-48876. The Service proposes to 
discontinue the designation of Category 2 and Category 3 taxa in notices of review. Although the Service 
remains concerned about Category 2 species, further biological research and field study are needed to resolve 
the conservation status of these taxa. Additionally, the Service proposes that the designation of Category 
2 taxa as candidates has resulted in confusion about the conservation status of these taxa. 

The Raptor Research Foundation consists of more than 1200 professional biologists, conservationists, 
researchers, and managers. Our organization has been an interested participant in listed species conservation 

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WINGSPAN 


since the inception of the Endangered Species Act (ESA). The Service's decision to eliminate Category 2 
and 3 taxa is of concern to The Raptor Research Foundation because it affects several species of interest to 
our membership. These include the Ferruginous Hawk, Swainson's Hawk, and Northern Goshawk. Data 
from some local areas suggest that populations of all of these species are in decline, but the regional or 
continental extent of these declines are not known. 

We urge that the Service reconsider the decision to discontinue the listing of designated Category 2 and 
Category 3 taxa in notices of review. Category 2 species, by definition, have some probability to be eligible 
for listing although sufficient information to justify issuance of a proposed rule is lacking. It is this 
uncertainty regarding status that is of concern and must be addressed. The key to dealing with the current 
uncertainty regarding the status of these taxa is further research and field study on the distribution, 
abundance, habitat relationships, and population dynamics of these taxa. As noted by the Service in the 
Federal Register, some of these taxa may and others may not warrant listing. Continuing to include these 
taxa in future notices of review will provide a single, centralized, national list of taxa that require priority 
research and field study. If no list of species of uncertain status is maintained, then monitoring may not be 
done and some species may decline to extinction without receiving the protection of the ESA. This possible, 
and indeed likely, result would be in direct violation of the intent of the ESA. 

At this time, it is unclear how these taxa will be identified and their status evaluated if they are not listed in 
future notices of review. If the Service does not acknowledge and address the uncertainty of the conservation 
status of these taxa, we believe this will result in more confusion about which species are of special concern 
and which require monitoring priority. The potential trade-offs of eliminating Category 2 and 3 species need 
to be addressed. The intent of the ESA is to minimize the probability of extinction and to promote the 
recovery of species in jeopardy. The first step in this process is to identify and acknowledge uncertainty 
regarding the status of potentially declining taxa. The Category 2 designation clearly and unambiguously 
recognizes this uncertainty. Continuing to include these taxa in future notices of review is a basic and 
necessary step in focusing priority attention in terms of monitoring and information gathering on these taxa. 

Based on this reasoning, The Raptor Research Foundation recommends that the United States Fish and 
Wildlife Service continue to include Category 2 species in future notices of review. Alternatively, we 
suggest publishing a list of taxa with a different label (i.e., not "Category 2") that would clearly indicate the 
status of these species (e.g., "Species of Concern" or "Species of Uncertain Status"). 

Most Sincerely, 

James C. Bednarz 
Chair of Conservation Committee 
The Raptor Research Foundation 

(Consetvation Committee Chair's Note: The U.S. Fish and Wildlife Service (USFWS) published its final 
decision on the identification of candidates for listing as endangered or threatened in the Federal Register 
on December 5, 1996 (Vol. 6 1 (23 5):6448 1-64485). The final decision was to discontinue the maintenance 
of a list of Category 2 species. USFWS did not respond directly to RRF nor to the specific issues raised in 
our letter (see above). However, USFWS did group comments received and discussed nine issues related 
to its decision. The essence of USFWS's response was that lists of sensitive species maintained by The 
Nature Conservancy's Heritage system, in conjunction with other state and federal agency lists, may provide 
a workable substitute for the former list of Category 2 species. Interested members should review the final 
decision published in the Federal Register.) 


l a ■ 


David Bird 
President 

The Raptor Research Foundation 


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SEPTEMBER 1997 


PEREGRINE DE-LISTING COMMITTEE UPDATE 

by Brian A. Millsap, Eastern Director 

At the request of the Ornithological Council, RRF appointed a committee to evaluate the scientific evidence 
regarding a proposal by the U.S. Fish and Wildlife Service to de-list the American Peregrine Falcon ( Falco 
peregrinus anatuni) in January, 1996. This committee consists of RRF members Mitchell Byrd, Gordon 
Court, Jim Enderson, Pat Kennedy, Brian Millsap, and Bob Rosenfield. Committee members have been 
accumulating, reviewing, and discussing the available information since that time. The committee expects 
to have a draft report on its deliberations prepared in time for delivery to the RRF Officers and Board of 
Directors at the 1997 business meeting in Savannah. 


THE PEREGRINE FUND 
RECEIVES 

■ 1997 COMPUTERWORLD SMITHSONIAN AWARD 

The Peregrine Fund recently received the 1997 Computerworld Smithsonian Award in the Environment, 
Energy, and Agriculture category for visionaiy use of information technology in its Harpy Eagle 
Conservation Program. The award recognizes The Peregrine Fund's successful integration of satellite 
telemetry, global positioning system, and geographic information system technologies to further conservation 
of the Harpy Eagle and its rain-forest habitat. Nominated by Digital Equipment Corporation, The Peregrine 
Fund was selected by a panel of judges who sought projects that were based on innovative uses of 
information technology that bring about improvements to society. The Peregrine Fund's nomination will 
become part of the Smithsonian Institution's Permanent Research Collection of Information Technology 
Innovation at the National Museum of American History. The Peregrine Fund's nomination, which contains 
detailed information about the Harpy Eagle Conservation Program, may be viewed on the World Wide Web 
at: http://innovate.si.edu/x7view. pl?nomid=97400, 


1997 HAWK MOUNTAIN-ZEISS RAPTOR RESEARCH AWARDS 

For the past nine years, Carl Zeiss Optical has sponsored a research grant with Hawk Mountain. The Hawk 
Mountain-Zeiss Raptor Research Award is presented to candidates throughout the world who are involved 
in raptor research projects. The 1997 research award will be split evenly between two recipients: Michael 
Goldstein, a graduate student at Clemson University, and Todd Katzner, a graduate student at Arizona State 
University. Mr. Goldstein will use his grant to study the impact of organophosphate pesticides on Swainson's 
Hawks during wintering in Pampas, Argentina. In 1996, field reconnaissance disclosed four incidents of 
organophosphate poisoning that killed at least 4,100 Swainson's Hawks. Goldstein will develop a risk 
assessment for Swainson's Hawks and devise a management plan for the species in Argentina. His work is 
part of a larger effort involving U.S., Canadian, and Argentinian wildlife biologists. The other recipient, Mr. 
Katzner, will use his grant to study the raptor community at the Naurzum Zapovednik Nature Reserve in 
north central Kazakhstan. Katzner will study predator-prey relationships of the four species of eagles: the 
Pallas' Sea Eagle, the Imperial Eagle, the Steppe Eagle, and the Golden Eagle. He will focus on eagle habitat 
use, the impact of patch dynamics on eagle feeding ecology, and reproductive success. Because the status 
of raptors in the region is largely unknown, the work is of considerable conservation interest. For more 
information on the Hawk Mountain-Zeiss Raptor Research Award, write to Keith L. Bildstein, Director of 
Research, Hawk Mountain Sanctuary, RR2, Box 191, Kempton, PA 19529. 


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ANNOUNCEMENTS 


UPCOMING MEETINGS 


1997 , 

October 30 - November 1 

RAPTOR RESEARCH FOUNDATION 

Savannah, Georgia 

Contact: Michelle Pittman or Fran Aultman, 

Georgia Southern University, P.O. Box 8124, 
Statesboro, GA 30460-8124, phone: 912-681- 
5555, fax: 912-681-0360, e-mail: meeden@ 

gsvms2.cc.gasou.edu or franic@gsaix2.cc.gasou. 
edu. 

1998 

April 6-12 

NORTH AMERICAN ORNITHOLOGICAL 

CONFERENCE 

St. Louis, Missouri 

Contact: Bette Loiselle, Department of Biology, 
University of Missouri~St. Louis, 8001 Natural 
Bridge Road, St. Louis, MO 63121-4499, phone: 
314-516-6224; fax: 314-516-6233, e-mail: bird_ 
stl@umsl.edu. 

August 4-11 

FIFTH WORLD CONFERENCE ON BIRDS 
OF PREY AND OWLS 
Mid rand (Johannesburg), South Africa 
Contact: Gerhard Verdoorn; EWT Raptor 

Conservation Fund; Vulture Study Group, Raptor 
Conservation Group, Poison Working Group; P.O. 
Box 72155; Parkview 2122; South Africa; phone: 
27-1 1-646-4629, 27-1 1-646-8617, or 27-82-446- 
8946 (mobile); fax: 27-11-646-4631; e-mail: 

nesher@global.co.za; or Robin Chancellor, e- 
mail: WWGBP@aol.com. 

September 30 - October 4 ' 

RAPTOR RESEARCH-FOUNDATION 
Ogden, Utah 

Contact: Carl Marti, Department of Zoology, 
Weber State University, Ogden, UT 844Q8-2505, 
phone: 801-626-6172, fax: 801-626-7445, e- 


mail: cmarti@weber.edu, www: http://www. 

weber.edu/rrf/. 

1999 

November 9-13 

RAPTOR RESEARCH FOUNDATION 
' La Paz, Baja California Sur, Mexico 
Contact: Ricardo Rodriguez Estrella, Centro de 
Investigaciones Biologicas del Noroeste> Division 
de Biologia Terrestre, km 1 Carretera San Juan de 
la Costa, La Paz 23000 B.C.S. MEXICO, phone: 
1 12-536-33, fax: 1 12-553-43, e-mail: estrella® 
cibnor.mx. 


POSITIONS AVAILABLE 


FALCON INTERNS We have vacancies for 
interns from May to September 1998, working 
with our seven permanent staff, breeding, hacking, 
and training falcons. We manage about 200 
falcons, also horses and sheep. We provide board, 
lodging, and training. Applicants should be 1 8 or 
over, non-smokers, with at least two years 
experience of training raptors. Applicants should 
send a resume, a photograph, and two references 
to: Dr Nick Fox, Director of Falcon 

Management and Research, Environmental 
Research and Wildlife Development Agency 
(Abu Dhabi), Penllynin Farm, College Road, 
Carmarthen, Carmarthenshire SA33 5EH, 
Wales, UK, phone/fax: 44-1267-233864, email: 
narc@celtic.co.uk. 

RESEARCH ASSISTANTS FOR FALCON 
SURVEYS We require research assistants for 
falcon survey work from approximately March to 
July 1998 in Russia, Kazakhstan, Kyrgyzstan, 
Uzbekistan, Mongolia, and China. Applicants 
should be 20 or over with a background in 
biological science, and able to manage under 
difficult conditions in a non-English speaking 
environment. The work is unpaid apart from 
expenses, and entails assisting local biologists 


SEPTEMBER 1997 


surveying nesting Saker and Peregrine falcons. 
We provide training in field techniques in the UK 
before you leave. We can provide academic 
supervision to include your field work as part of a 
degree course. Applicants should send a resume, 
a photograph, and two references to: Dr Nick 
Fox, Director of Falcon Management and 
Research, Environmental Research and 
Wildlife Development Agency (Abu Dhabi), 
Penllynin Farm, College Road, Carmarthen, 
Carmarthenshire SA33 5EH, Wales, UK, 
phone/fax: 44-1267-233864, email: narc@ 

celtic.co.uk. 


PUBLICATIONS AVAILABLE 


"RAPTOR RESEARCH REPORT NO. 9" 
"The Burrowing Owl, Its Biology and 
Management: Including the Proceedings of the 
First International Burrowing Owl Symposium," 
edited by J. L. Lincer and K. Steenhof, is now 
available. Printed in May 1997, the publication is 
No. 9 in RRF's "Raptor Research Report" series. 
Included are papers presented at the Burrowing 
Owl symposium held in conjunction with the RRF 
meeting in Bellevue, Washington in 1992. An 
"Invited Papers" section has a paper on the 
species' status in North America, a literature 
overview, and a review of Burrowing Owl 
taxonomy and distribution. Other major sections 
include, "Population Biology and Status," 
"Genetics and Breeding Biology," "Life History 
and Breeding Behavior," and "Management and 
Related Subjects." The two appendices include a 
Burrowing Owl bibliography and an account on 
survey protocol and guidelines for mitigation. For 
a copy, contact: Jim Fitzpatrick, Treasurer, 
The Raptor Research Foundation, Inc., 12805 
St. Croix Trail, Hastings, MN 55033. Cost is 
$20 for RRF members and $25 for non-members, 
plus an additional $5 for shipping and handling. 

"THE PRAIRIE FALCON" This new, 171- 
page book by Stanley H. Anderson and John R. 
Squires covers all aspects of the Prairie Falcon's 
life history from mating and rearing young to 
hunting behaviors and the yearly migration cycle. 
It may be purchased directly from the publisher: 

l 


University of Texas Press, P.O. Box 7819, 
Austin, TX 78713-7819, phone: 800-252-3206, 
fax: 800-687-6046. 


NEWS OF MEMBERS 


Isabel Bellocq will have a new address effective 
October 1, 1997: Departamento de Ciencias 

Biologicas; FCEN, Universidad de Buenos Aires; 
Ciudad Universitaria, Pab. 2; 1428 - Buenos 
Aires; Argentina; phone: 54-1-781-5021 ext. 214, 
e-mail: bellocq@biolo.bg.fcen.uba.ar. 

REQUESTS FOR ASSISTANCE 


FINAL REQUEST . FOR RAFFLE 
DONATIONS The silent auction planned for 
RRF's 1997 annual meeting has been converted 
into a raffle. Donations have been very slow in 
arriving, and many more items are still needed. 
Please consider making a donation, as this is a 
fund raising event to provide the monies needed to 
operate RRF and promote raptor research. 
Donations should be mailed to: Center for 

Wildlife Education, RRF RAFFLE, Georgia 
Southern University, P.O. Box 8058, 
Statesboro, GA 30460-1779. Please also notify 
Ed Henckel, the raffle coordinator, at: 
ednj udy@epix.net. 

PLEASE UPDATE YOUR LISTING IN "THE 
FLOCK"! Many membership records recently 
transferred to OSNA from RRF had no historical 
data to indicate what year the member joined 
RRF. With no information to base this on, OSNA 
used the year RRF joined OSNA to fill this field 
in the directory. OSNA would like RRF members 
to make OSNA aware of their actual "joined 
society" dates, so that OSNA's historical 
information can be more complete and accurate. 
Corrections should be transmitted to: Richard 
Walker, OSNA Business Manager, P.O. Box 
1897, Lawrence, KS 66044-8897, phone: 785- 
843-1221, fax: 785-843-1274, e-mail: rwalker@ 
allenpress.com. 

1 


1 11 i 


WINGSPAN 


RAPTOR DISPERSAL SYMPOSIUM 

by Petra Bohall Wood, Director at Large 

The Raptor Research Foundation will be hosting a symposium on "Raptor Dispersal Patterns and 
Mechanisms" during the April 1998 OSNA meetings in St. Louis, Missouri. Each of six presentations will 
focus on a particular species of raptor (or closely related species) and will attempt to summarize existing 
information. The species represented will present a mix of dispersal strategies by including migratory and 
sedentary species as well as species with delayed breeding. 


RECENT THESES ON RAPTORS 


Alvarez-Cordero, E. 1996. BIOLOGY AND CONSERVATION OF THE HARPY EAGLE IN 
VENEZUELA AND PANAMA. Ph.D. Diss., Univ. Florida. 212pp. 

From 1989 to 1996, I studied the Harpy Eagle { Harpia hctrpyjct ) in two regions at similar latitude in 
Central and South America to learn more about the biology and habitat of this species and evaluate its 
conservation needs. 1 collected approximately 248 records covering the whole geographic range of the Harpy 
Eagle; 103 entries were collated for Venezuela, and 52 for Panama. Assisted by local people I located 10 
nesting sites of these eagles in the Darien Region of Middle America, all in the emergent tree species (>40 
m to the first branch) called "Cuipo" ( Cavanillesia plcmtamfolia Bombacaceae); one additional site was 
found in the Atlantic Region. In the Venezuelan Guayana I mainly worked in logging concessions, and 
located 29 nest sites; the eagles built their nests 25-40 m high in emergent trees, some reaching 50-52 m. 
They used seven different tree species in four botanical families, mainly in the Bombacaceae and 
Lecythidaceae. 

In 1 995, 1 used Global Positioning System (GPS) to survey roads and trails (>2,500 km) over a 300 x 300 
km study area in SE Venezuela, and map locations of nests (n=29) and other features related to forest 
management. These data were integrated in a Geographic Information System (GIS) with existing 
information for vegetation, drainage network, and centers of human activity. Most nests sites had some sort 
of tree felling activity within 1 km, and 7 nest trees have been destroyed. While most nests in Venezuela were 
close to human settlements (<20 km, n=18), measurements of nearest pair spacing (range 3-7 km) for nests 
in Venezuela, Panama, and Guyana suggest that density of this raptor greatly surpasses previous estimates. 
Pair dispersion ranged from 45 to 79 km 2 per pair in Venezuela and was 10-63 km 2 per pair in Panama. 

Sloths ( Bradypus spp. and Choloepus spp.) predominated in the diet of the eagles studied in Venezuela, 
as well as various primates and other arboreal mammals (such as kinkajou, large and small porcupines, and 
opossums). The eagles also captured a few species of birds and reptiles like the Green iguana and the Tegu 
lizard. 

Harpy Eagles persist for years in selectively logged areas near landscapes dominated by human activity. 
During this investigation I have equipped 16 eagles (only 2 were adults) with both satellite and radio 
transmitters. Usually only one egg hatched after 56-58 days of incubation (average 56 d), nestlings were 
ready for flight at age 160-180 days; young eagles had an extended period of post-fledgling dependency (>2 
years after fledgling, n^4) before dispersal from the nest site. Shooting of eagles (including 2 of the young 
birds I telemetered), and live poaching of nestlings were major threats to the local population of eagles that 
I studied. 


1 12 1 


SEPTEMBER 1997 


Bisson, I. 1996. NEST SITE SELECTION AND PRODUCTIVITY OF THE SPANISH IMPERIAL 
EAGLE AQUILA ADALBERTI POPULATION OF DONANA NATIONAL PARK, SPAIN. M S. 
Thesis, McGill Univ., Montreal, Quebec. 85pp. 

I examined the nest site selection of the Spanish Imperial Eagle Aquila adalberti population of the 
Donana National Park (SW Spain) from 1984 to 1994, in relation to the microhabitat and macrohabitat 
representing vegetative composition, degree of human influence and land use. The study included 75 active 
nest sites and 75 random sites. Univariate analyses and Generalized Linear Models were used. Nest sites 
significantly differed from the random sites for 87% of habitat variables measured. The model correctly 
classified 85.3% of the nest sites and 86.7% of the random sites. The probability of occupation of a site by 
a Spanish Imperial Eagle increased with tree height, angle of aperture of the wood stand, distance to paved 
roads, distance to urban centre and distance to water body. 

Four productivity parameters (laying date, number of eggs, number of nestlings and number of chicks 
fledged) were measured over the same 1 0-year period for 16 territories in the Donana Park. Spearman 
correlation coefficient analyses (r v ) was used to test for relationships between territory habitat characteristics, 
representing m icrohabitat, vegetative composition, degree of human influence and land use, and productivity. 
Egg-laying was later in territories situated closer to urban centres (n - 1 6,r s = -0.529, P < 0.05) and those 
with more kilometres of power lines (n = 16, r s ■= 0.518, P < 0.05). No other productivity parameter was 
found to be significantly influenced by any of the territory features measured. 

Garner, H. D. 1997. DYNAMICS AND STABILITY OF A POPULATION OF WINTERING RED- 
TAILED HAWKS IN THE DELTA REGION OF ARKANSAS. M.S. Thesis, Arkansas State 
University, State University. 73pp. 

The impacts of human activities on wildlife and ultimately on the human environment are not completely 
understood. I conducted a study on a winter population of Red-tailed Hawks ( Buteo jamaicensis), top 
predators, which may be relatively sensitive indicators of ecosystem degradation and modification in the 
Delta region of Arkansas. Specifically, the degree of stability or dynamics of individuals making up the 
population was explored to determine if winter populations may be monitored effectively. During the 
winters of 1994-95 and 1995-96, 10 adults and 24 immature birds were captured using bal-chatri cage traps. 
Hawks were marked with binumeric leg bands from early November through mid February during both 
winter seasons. A sub-sample of 15 hawks was also instrumented with radio transmitters. Biweekly surveys 
revealed that red-tail numbers fluctuated throughout the winter season possibly in response to changing 
weather conditions. The weather factors in combination that seemed to influence hawk numbers were wind 
direction, wind speed, and temperature (7? 2 =0.40, F m 3,29, P— 0.049). Red-tailed Hawk numbers increased 
slightly during periods of southerly winds and warmer temperatures, and decreased during periods of 
northerly winds and colder temperatures. The majority of the Red-tailed Hawk population wintering in the 
study area was found to be stable with 15 of 34 birds (44%) exhibiting a relatively long-term winter 
residency strategy (staying in a defined area for at least 37 days) and 13 of 34 (38%) displaying a short-term 
residency strategy (staying in a defined area for more than 5 days and less than 37 days). Most red-tails 
captured during November and early December remained in the study area through early January, but were 
replaced or augmented by another group of hawks that moved into the study area during late December and 
January. The second group of birds remained in the study area until the spring migration period began in 
March. The available cover types along the survey route were found to be used out of proportion to 
availability. Observed Red-tailed Hawk numbers were higher than expected in rice fields and forests and 
less than expected in bean and wheat fields. Juveniles and adults were not observed to use the various cover 
types differently (2^2.22 1, P^O.528). Red-tail numbers tallied on raptor surveys were significantly 
correlated to rodent numbers (r=0.6 1 8). Relative rodent abundance was found to be higher in the cover types 
with higher observed hawk numbers. My data indicate that individual Red-tailed Hawks pursue one of three 
alternative strategies during the winter season: 1) winter residency, 2) short-term residency, and 3) 

migratory. All factors influencing an individual red -tail to pursue a specific strategy are not clear, but 
changing weather and rodent availability may motivate Red-tailed Hawks to adopt a more mobile strategy. 


WINGSPAN 


Plumpton, D. L. 1996. ANTHROPOGENIC EFFECTS ON WINTER HABITAT USE BY 
FERRUGINOUS HAWKS IN COLORADO. Ph D. Diss., University of Minnesota, St. Paul. 85pp. 

Habitat loss, fragmentation, and insularization constitute the single biggest threat to global biodiversity. 
Despite the magnitude of this problem, few studies have examined the response of wildlife to ongoing habitat 
destruction. I studied the behavior of Ferruginous Hawks ( Buteo regalis) wintering in 2 adjacent sites in 
Colorado that featured low and high anthropogenic influence and habitat fragmentation; the Rocky Mountain 
Arsenal National Wildlife Refuge (RMANWR), and several Denver suburbs, respectively. Daily home 
ranges were notylifferent ( P = 0.28) in size for RMANWR ( N= 25, x = 4.71 km 2 , SE = 1 .33) and suburban 
hawks (N= 13, x = 2.30 km 2 , SE = 0.50). Although hawk activity levels between the sites were not different 
(P = 0.146), RMANWR hawks used more pole and ground perches, of longer sum duration, and comprising 
a greater proportion of the daily time budget (P < 0.05). Conversely, suburban hawks used more tree 
perches, of longer sum duration, and a greater portion of the daily time budget (P < 0.00 1)._ RMANWR 
hawks spent less time roosting after daylight began (x = 61 min) than did suburban hawks (x = 138 min, 
P = 0.004). The principal prey [black-tailed prairie dogs {Cynomys ludovicianus )] was procured by killing 
directly, kleptoparasitizing, and scavenging. Prey acquisition and competitive interactions were not different 
t P > 0.05) between the sites. Relative abundance of Ferruginous Hawks differed by site and year (P < 

0. 0001), and reflected availability of prairie dogs. Ferruginous Hawks modified perch use, time budgets, and 
roosting habits to exploit fragmented, human-altered habitats, provided some foraging habitats with adequate 
populations of suitable prey species remained. 

Villarroel, M. 1996. COPULATORY BEHAVIOUR AND PATERNITY IN SOLITARY- ,AND 
COLONY-NESTING KESTRELS. Ph.D. Diss., McGill Univ., Montreal, Quebec. 134pp. 

In this thesis, I analysed the mating behaviour of the solitary- nesting American Kestrel (. Falco 
sparverius ) in southern Quebec (Canada) and the colony-nesting Lesser Kestrel {F. naumanni) in Aragon 
(Spain). DNA fingerprinting of 26 families of Lesser Kestrels revealed that 3.4% of nestlings were extra- 
pair, which may have arisen through either extra-pair copulation or mate replacement. Two nestlings in two 
different nests were also the result of intraspecific brood parasitism. DNA fingerprinting of 2 1 American 
Kestrel families showed that all the nestlings in two nests were extra-pair (10% extra-pair young overall), 
most probably due to mate replacement. 

I analysed the mating behaviour of both species in two studies with a similar aim, i.e. to test why mated 
pairs copulate so frequently. Sixteen pairs of wild American Kestrels and 12 pairs of "solitary" Lesser 
Kestrels (1-4 nests per 0.3 km 2 ) were analysed in terms of four hypotheses that explain high frequency of 
within-pair copulations both outside and during the fertile period. First the Paternity Assurance Hypothesis, 

1. e. males control timing and frequency of copulations to best assure fertilization, was rejected because extra- 
pair copulation attempts were low in both species (<1% of all copulations observed), within-pair copulation 
frequencies did not increase with nest density in the Lesser Kestrel, and copulation and mate attendance did 
not increase as the fertile period approached. Second, the Immediate Mutual Benefits Hypothesis, i.e. 
females trade copulations for food, was refuted because copulation most often occurred without food 
transfers. Third, the Female Mate-Guarding of Males Hypothesis, i.e. females distract their mates from other 
mating opportunities by copulating frequently, was rejected because male loss was low, males and females 
solicited similar amounts of copulations, and females did not differ in the timing or frequency of 
solicitations. Finally, the Mate Assessment Hypothesis, i.e. assessment of mate quality is mediated by 
copulation, most closely predicted the behaviour observed since within-pair copulation was high outside the 
fertile period and during pair formation in both species. 

Warlike, D.K. 1996. A COMPARISON OF NESTING BEHAVIOR OF BALD EAGLES BREEDING 
ALONG WESTERN LAKE SUPERIOR AND ADJACENT INLAND WISCONSIN. M.S. Thesis, 
Univ. Minnesota, St. Paul. 58pp. 

Using a remote video recording system and direct observations we constructed quantitative time budgets 
of adult and nestling Bald Eagles (Haliaeetus leucocephalm ) breeding in northern Wisconsin from 7 days 


1 


1 .14 | 


1 


SEPTEMBER 1997 


post hatch until fledging in 1992 and 1993. Bald Eagles breeding in north-central Wisconsin exhibit high 
productivity (>1 .0 young per occupied territory), and low egg and nestling blood contaminant levels. We 
quantified prey delivery rates, and nestling and adult time activity budgets at the nest on a weekly basis until 
fledging. Season-long prey delivery rates to Wisconsin Bald Eagle nests averaged 5.12 items day' 1 , and 
appeared related to number of nestlings in the nest, but not nestling age. Attendance by one or both adults 
declined rapidly from >90% in weeks 2-4 (8-28 d post hatch) to <20% by week 8 (50-56 d). Nestlings were 
inactive in weeks 2-4, lying in the nest >90% of the day. Beginning with week 5 (29-35 d), brooding dropped 
below 3% of the adult time budget and nestlings sought sun and shade in the nest. Nestlings stood or sat in 
the nest -30% of the time starting in week 6 (36-42 d), began to feed themselves as the amount of time adults 
spent feeding nestlings declined, and their mobility in the nest increased. During weeks 9-12 (56-83 d post 
hatch), nestlings stood or sat most of the day (>50%), and the proportion of their time budgets spent at active 
behaviors (21%) peaked in week 9. Adult attendance at the nest was <10% of the day in weeks 9-12. In 
addition to quantifying time budgets, we found that the nesting period can be divided into 3 nestling stages 
for time budget comparison in different regions of the breeding range based on changes in adult and nestling 
behaviors. 

In 1 992 and 1 993 we conducted behavioral observations at Bald Eagle (Haiiaeetus leucocephalm) nests 
on the Wisconsin Lake Superior shoreline (LSS) where productivity has historically been lower than inland 
Wisconsin sites. The Lake Superior shoreline breeding Bald Eagle population was extirpated, most likely 
due to anthropomorphic contaminant exposure, and has become re-established beginning in the 1980’s. We 
quantified prey delivery rates and time budgets of adults and nestlings at these nests and compared them to 
the prey de lively rates and time budgets quantified at inland northern Wisconsin nests (Chapter 1). The 
behavioral differences recorded were most pronounced between inland and LSS nests with 2 nestlings 
(LSS2). Adults at inland nests delivered an average of 4.79 prey items day' 1 , significantly more than the 2.04 
items day' 1 delivered to LSS nests. Daily prey delivery rates to nestlings at LSS nests with 1 nestling (LSS1) 
(2.43 deliveries nestling' 1 day" 1 ) were similar to those recorded at inland nests (3.13 deliveries nestling' 1 day" 
'), and both were significantly greater than prey delivery rates to LSS2 nests (0.92 deliveries nestling' 1 day' 1 ). 
Adults at inland nest sites spent significantly more time at the nest (91.7%) than did adults at LSS2 nests 
(63.7%), and adult attendance at LSS1 nests (85.7%) was significantly higher than at LSS2 nests, but not 
different from inland nests during weeks 2-4 post hatch. Adult attendance was higher and nestlings at inland 
nests spent more time active, feeding, and upright in the nest, and less time lying in the nest compared to 
nestlings at LSS2 nests in weeks 5-8. During weeks 9-12, LSS2 nestlings spent significantly less time 
feeding than did nestlings at inland nests. Reduced prey deliveries and behavioral variation are consistent 
with the hypothesis that Bald Eagle productivity on the Wisconsin Lake Superior shoreline is primarily 
influenced by prey availability. 


WINGSPAN CONTRIBUTIONS 

The Raptor Research Foundation wishes to thank the following people who contributed material to this 
issue of Wingspan : Eduardo Alvarez-Cordero, David Andersen, Marc Bechard, James Bednarz, 
Isabel Bellocq, David Bird, Wendy Denton, Ricardo Rodriguez Estrella, Nick Fox, Robert 
Kenward, Karen Lutto, Carl Marti, Helen McDonald, Brian Millsap, Simone Ross, Mary 
Margaret Spradlin, Karen Steenhof, Daniel Varland, and Petra Bohall Wood. 

Wingspan welcomes contributions from RRF members and others interested in raptor biology and 
management. Articles and announcements should be sent, faxed, or e-mailed to the editor: Leonard 
Young, 5010 Sunset Drive NW, Olympia, WA 98502-1576 USA (phone/fax: 360-866-8039; e-mail: 
wingspan@msn.com). The deadline for the next issue is February 6, 1998. 


WINGSPAN 


SEPTEMBER 1997 


(continued from page 2) 

an endowment fund. If you speak other languages* offer to be a translator for our printed materials or at one 
of our international conferences. If you're a writer, submit material to our newsletter or journal. 

Got a project for RRF? Say, an educational poster or brochure, a workshop, etc.? Put together a proposal, 
and we'll do our best to help you make it a reality. Bear in mind that we are not looking for more work to 
do; if you have an idea, be prepared to help carry it to fruition. 

In short, get involved! Everything you do for RRF, no matter how modest, is something achieved for raptor 
conservation. Clearly that's what it is all about! 

This is my last Wingspan address as your president. My term comes to a close at the end of this year, as it 
is time to pass the reins over to another highly deserving soul. I have thoroughly enjoyed my tenure, and I 
like to think that I have made some inroads toward the goals I defined in my election platform, e.g. bringing 
RRF even closer to other parts of the world, supporting the journal and newsletter, etc. As I've said before, 
not a day goes by without some RRF business to take care of via e-mail. And in retrospect, two years was 
perhaps too short a term for the president of RRF. It takes about a year just to get a feel for things. I wonder 
how our next president would feel if his term was for three years and not just two. Hmm ... something to 
think about. In any case, I remain fully dedicated to the organization, and 1 plan to merely change hats. RRF 
has come a long way since its inception, but there is certainly plenty of room for improvement. 

David M. Bird 



INFOEMATION/OM- 1998 KMF MEETING AVAILABLE ON WWW 


Information on the 1998 RRF annual meeting, to be held in Ogden, Utah from September 30 to October 
4, will be available on the World Wide Web at: http://www.weber.edu/rrfr. This site will eventually 
contain information on the local environment of Ogden; the meeting schedule; a call for papers; and 
information on registration, lodging, transportation, field trips, and special events. 



WINGSPAN 

5010 Sunset Drive NW 

Olympia, WA 98502-1576 USA 


1 


Non-profit Organ. 

u.s. 

POSTAGE 

PAID 

Olympia,. W A 
Permit No. 169